EP0059247A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
EP0059247A1
EP0059247A1 EP81108862A EP81108862A EP0059247A1 EP 0059247 A1 EP0059247 A1 EP 0059247A1 EP 81108862 A EP81108862 A EP 81108862A EP 81108862 A EP81108862 A EP 81108862A EP 0059247 A1 EP0059247 A1 EP 0059247A1
Authority
EP
European Patent Office
Prior art keywords
spacer elements
display device
carrier plate
fixing layer
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP81108862A
Other languages
German (de)
English (en)
Other versions
EP0059247B1 (fr
Inventor
Friedrich-Wilhelm Nickol
Harald Perthes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mannesmann VDO AG
Original Assignee
Mannesmann VDO AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann VDO AG filed Critical Mannesmann VDO AG
Publication of EP0059247A1 publication Critical patent/EP0059247A1/fr
Application granted granted Critical
Publication of EP0059247B1 publication Critical patent/EP0059247B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13392—Gaskets; Spacers; Sealing of cells spacers dispersed on the cell substrate, e.g. spherical particles, microfibres

Definitions

  • the invention relates to a display device for displaying bright characters in a dark environment, in particular liquid crystal display, with a medium that can be switched between two optically different states between two mutually parallel carrier plates, with a fixing layer applied to one of the mutually facing carrier plate surfaces and containing spacer elements through which the carrier plates are held at a certain distance from one another and with a polarizer assigned to each carrier plate.
  • the fixing layer completely covers the carrier plate and the spacer elements consist of a material of dark color.
  • the fact that the fixing layer completely covers the carrier plate ensures a uniform spacing of the carrier plates from one another over their entire surface.
  • the dark spacer elements in the object of the invention absorb this light. In this way, the surroundings of the characters remain deeply dark and create a strong contrast between themselves and the bright characters.
  • the spacer elements can be dark blue or brown or black.
  • the spacing elements are preferably at a greater distance from one another than their diameter.
  • the spacer elements preferably have a diameter of ⁇ 100 ⁇ m and are arranged on the carrier plate with a distribution of eins one to two spacer elements per square millimeter. This has the advantage that despite the dark color of the spacer elements, there is only a practically imperceptible reduction in the brightness of the characters compared to transparent spacer elements.
  • the spacer elements can be spherical and made of glass.
  • the spacer elements are integrated in the fixing layer, they are stationary and can e.g. do not place the vertical display device in the lower area of the display device and thus become ineffective for a large part of the display device.
  • Damage e.g. the orientation layers, which are caused by vibrations of the display and thus the spacing elements striking the orientation layers, are also avoided by integrating the spacing elements into the fixing layer.
  • the surface electrode can serve as a fixing layer for the spacer elements.
  • an insulation layer covering electrodes arranged on the carrier plate can serve as a fixing layer for the spacer elements.
  • Another training option is that the anti-reflective layer covering a carrier plate is used as a fixing layer for the spacer elements.
  • the fixing layer has cutouts corresponding to the electrode segments. This also avoids the practically imperceptible reduction in the brightness of the characters that occurs compared to transparent spacer elements.
  • the display device shown in section in the figure is a liquid crystal display with two spaced-apart support plates 1 and 2, which are made of glass and form a closed cell between them.
  • Electrodes are arranged on the facing surfaces of the carrier plates 1 and 2, the electrode 3 attached to the carrier plate 2 being in one piece, while the electrode 4 arranged on the carrier plate 1 consists of separately controllable, character-forming electrode segments.
  • Both electrodes 3 and 4 are covered by an insulation layer, the insulation layer 5 arranged on the electrode 3 having no spacer elements.
  • Spacer elements 7 are contained in the insulation layer 6 arranged on the electrode 4, which ensure that the two carrier plates 1 and 2 are kept at the same distance from one another over their entire surface.
  • the spacer elements 7, which consist of black light-absorbing glass balls, are arranged at a distance from one another which is greater than their diameter.
  • the insulation layers 5 and 6 are covered by orientation layers 8 and 9, while the cell space formed by the carrier plates 1 and 2 is filled with a liquid crystal substance 10.
  • polarizers 11 and 12 are arranged on the outer sides of the carrier plates 1 and 2, the polarizer 12 also carrying a reflector 13.
  • the polarizers 11 and 12 are aligned in such a way that an observer sees a dark display field when the electrodes 3 and 4 are not activated, and when the electrodes 3 and 4 are activated according to the configuration of the activated electrode segments of the electrode 4, bright signs in an otherwise dark environment.
  • the spacer elements 7 can have any other suitable shape in addition to the spherical shape. It has been found that rod-shaped spacer elements can be processed easily and are therefore particularly advantageously applicable to the subject matter of the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
EP81108862A 1981-02-27 1981-10-24 Dispositif d'affichage Expired EP0059247B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3107456 1981-02-27
DE19813107456 DE3107456A1 (de) 1981-02-27 1981-02-27 Anzeigevorrichtung

Publications (2)

Publication Number Publication Date
EP0059247A1 true EP0059247A1 (fr) 1982-09-08
EP0059247B1 EP0059247B1 (fr) 1986-01-08

Family

ID=6125936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108862A Expired EP0059247B1 (fr) 1981-02-27 1981-10-24 Dispositif d'affichage

Country Status (4)

Country Link
US (1) US4491391A (fr)
EP (1) EP0059247B1 (fr)
AU (1) AU549469B2 (fr)
DE (2) DE3107456A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606101A1 (de) * 1986-02-26 1987-08-27 Licentia Gmbh Fluessigkristallzelle

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3036293C2 (de) * 1980-09-26 1983-01-27 Ferd. Schulze & Co, 6800 Mannheim Verfahren zum Zusammenstellen von Warensendungen und Regal-Kommissioniergerät zur Durchführung des Verfahrens
CH652512A5 (de) * 1981-05-27 1985-11-15 Videlec Ag Anzeigevorrichtung mit fluessigkristall.
GB2133171B (en) * 1982-10-29 1986-07-30 Sharp Kk Liquid crystal display cell and method for manufacturing thereof
GB8402654D0 (en) * 1984-02-01 1984-03-07 Secr Defence Flatpanel display
JP3100014B2 (ja) * 1991-12-10 2000-10-16 キヤノン株式会社 強誘電性液晶素子及び該素子の製造方法
US5594571A (en) * 1991-12-10 1997-01-14 Canon Kabushiki Kaisha Ferroelectric liquid crystal device and process for production thereof
US5355079A (en) * 1993-01-07 1994-10-11 Wentworth Laboratories, Inc. Probe assembly for testing integrated circuit devices
US5668616A (en) * 1993-09-30 1997-09-16 Canon Kabushiki Kaisha Ferroelectric liquid crystal device with alignment layers having surface unevenness different from each other
KR20040084453A (ko) * 2003-03-28 2004-10-06 삼성전자주식회사 액정 표시 장치

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912365A (en) * 1971-07-26 1975-10-14 Research Frontiers Inc Method and apparatus for maintaining the separation of plates
AT349545B (de) * 1976-08-10 1979-04-10 Bbc Brown Boveri & Cie Fluessigkristallanzeige fuer reflexionsbetrieb und verfahren zur herstellung dieser fluessig- kristallanzeige
DE2815405B1 (de) * 1978-04-10 1979-08-16 Siemens Ag Anzeigevorrichtung,insbesondere Fluessigkristallanzeige
EP0009243A1 (fr) * 1978-09-22 1980-04-02 Siemens Aktiengesellschaft Procédé de fabrication d'éléments d'espacement en forme de fibre pour l'écartement de deux plaques et utilisation de ces éléments dans un dispositif d'affichage
DE2849402A1 (de) * 1978-11-14 1980-05-22 Siemens Ag Anzeigevorrichtung zur darstellung von veraenderlichen und festen informationen, insbesondere fluessigkristallzelle
DE2931113A1 (de) * 1979-07-31 1981-02-05 Siemens Ag Fluessigkristall-anzeigevorrichtung und verfahren zur herstellung einer solchen vorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3840695A (en) * 1972-10-10 1974-10-08 Westinghouse Electric Corp Liquid crystal image display panel with integrated addressing circuitry
NL7714232A (nl) * 1977-12-22 1979-06-26 Philips Nv Weergeefinrichting.
DE2823845B1 (de) * 1978-05-31 1978-12-14 Siemens Ag Anzeigevorrichtung zur Darstellung von veraenderlichen und festen Informationen
DE2827258A1 (de) * 1978-06-21 1980-01-03 Siemens Ag Elektrooptische anzeigevorrichtung, insbesondere fluessigkristallanzeige
JPS5525035A (en) * 1978-08-09 1980-02-22 Seiko Epson Corp Liquid crystal cell
JPS55153919A (en) * 1979-05-18 1980-12-01 Hitachi Ltd Manufacture of liquid crystal display element

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3912365A (en) * 1971-07-26 1975-10-14 Research Frontiers Inc Method and apparatus for maintaining the separation of plates
AT349545B (de) * 1976-08-10 1979-04-10 Bbc Brown Boveri & Cie Fluessigkristallanzeige fuer reflexionsbetrieb und verfahren zur herstellung dieser fluessig- kristallanzeige
DE2815405B1 (de) * 1978-04-10 1979-08-16 Siemens Ag Anzeigevorrichtung,insbesondere Fluessigkristallanzeige
EP0009243A1 (fr) * 1978-09-22 1980-04-02 Siemens Aktiengesellschaft Procédé de fabrication d'éléments d'espacement en forme de fibre pour l'écartement de deux plaques et utilisation de ces éléments dans un dispositif d'affichage
DE2849402A1 (de) * 1978-11-14 1980-05-22 Siemens Ag Anzeigevorrichtung zur darstellung von veraenderlichen und festen informationen, insbesondere fluessigkristallzelle
DE2931113A1 (de) * 1979-07-31 1981-02-05 Siemens Ag Fluessigkristall-anzeigevorrichtung und verfahren zur herstellung einer solchen vorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3606101A1 (de) * 1986-02-26 1987-08-27 Licentia Gmbh Fluessigkristallzelle

Also Published As

Publication number Publication date
AU8049182A (en) 1982-09-02
EP0059247B1 (fr) 1986-01-08
US4491391A (en) 1985-01-01
DE3173468D1 (en) 1986-02-20
AU549469B2 (en) 1986-01-30
DE3107456A1 (de) 1982-09-16

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